题目内容

位错攀移在低温下是难以进行的，只有在高温下才可能发生。

A. 对
B. 错

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从热力学上讲，所有的晶体缺陷都使畸变能升高，即都是非平衡态。

A. 对
B. 错

下列哪类土具有更为显著的冻胀现象？

A. 粉土
B. 黏土
C. 砂土

It’s expected that the jobby next June.

A. will have been fulfilled
B. would be fulfilled
C. have been fulfilled
D. is fulfilled

As soon as heat the classroom,the class became quiet.

A. has arrive
B. had arrived
C. arrived
D. would arrive